Wind turbine



FIG. 1 is a front elevational view of a wind turbine showing our new and ornamental design,

FIG. 2 is a rear elevational view thereof,

FIG. 3 is a front perspective view thereof,

FIG. 4 is a rear perspective view thereof; and,

FIG. 5 is a side elevational view thereof. 

CLAIM The ornamental design for a wind turbine, as shown and described. 